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B. C. VON PLATEN ET AL REFRIGERATOR Filed Oct. l, 1925 3 Sheets-Sheet l 3 Sheets-Sheet 2 A/vE/vrcws 17/ Arran-ufr lllllllllllll HH.

B. C. VON PLATEN ET AL REFRIGERATOR Nov. 29, 1927.

Nov. 29, 1927. 1,651,007

B. c. voN PLATEN ET AL REFRIGERATOR Filed Oct.1, 1925 5 Sheets-Sheet 5 Arrow/v5 Y "Patented Nov. 29, 1927.

UNITED STATES PATENT oI-i-ficE.-

BALTZAR CARL VON IPLATEN AND CARL GEORG MUNTERS, OF STOCKHOLM, SWEDEN, ASSIGNORS, BY MESNE ASSIGNMENTS, TO ELECTROLUX SERVEL CORPORATION, A

REFRIGERATOR.

A'pplication'led October 1, 192'5, Serial No. 59,9064, and in Sweden December 1, 1924s` The present invention relates to refrigerator cabinets provided with refrigerating apparatus, and relates more particularly to cabinets provided with refrigerating apparatus of the type wherein elements constitute a hermetically closed system and in which the different parts are welded or otherwise firmly and unremovably connected with one another. Certain difficulties are met with -in mounting such refrigerating apparatus on or within a cabinet, said diiculties depending mainly upon the fact that the evaporator should be arranged inside the heat insulating wall of .the cabinet, Whereas the other parts of the apparatus should be disposed outside the wall. In refrigerating apparatus whose different parts are connected with one another -by means of screw-threads or the like, the parts disposed on opposite sides of the heat insulating Wall may be easily connected with each other, but in apparatus of the first-mentioned kind the welding operation cannot be conveniently performed after the different parts of the apparatus have been mounted in position in the cabinet.

The principal object of the present invention is to avoid the .difficulties set forth above by providing a cabinet having aremovable wall part carrying the refrigerating apparatus in such a manner that the Ievaporator is vsituated inside said wall part and with-4 in the cabinet, Whensaid wall part is in position.

Another object of the invention is to provide'a cabinet havi-ng a removable side Wall l portion and a refrigerating apparatus carried by said Wallportion and disposed in such a manner-that the evaporator is on the ope side of said wall part, whereas the other parts of the refrigerating apparatus are disv posed on the opposite side thereof,'thepipes connecting said evaporator with the other parts of the refrigerating apparatus being utilized tosupport and fix the refrigerating apparatus in said Wall part:

A further object of the invention is to provide a cabinet having heat insulating walls and a removable wall portion adapted to fit into an opening in one of said walls, preferably in one of the side walls of Fig. 2 is a section on the line II-II of Fig. 1.

Fig. 3 is a side view of the refrigerating apparatus seen from the right in Fig. 2, the protecting casing being omitted. In this ligure for the sake of illustration the evaporator is turned in clockwise direction so as to come'in the same plane as the generator and the absorber.

Fig. 4 is a vertical section of another embodiment of .a lrefrigerator cabinet according to the invention with the refrigerating apparatus mounted in place.

Fig. 5 is a section on the line V-V in Fig, 4:.

Fig. 6 is a vertical section of a third embodiment of a refrigerating apparatus according to the invention with the refrigerating apparatus mounted in place.

According to `the embodiment shown in Figs. 1, 2 and 3, 1 denotes the heat insulating walls of the cabinet, one of said walls 1 having a quadrangular opening into which fits a doorl 2 of heat insulating material, said -door being preferably 'swingably mounted on hinges 3. The refrigerating apparatus lwhich is ofthe absorption type, comprisesa that passing from the generator 4. The generator is heated by means of a suitable source of heat, for instance an electric heat-l ing element .11'. The absorber 5 and the evaporator 6 are connected by means of pipes 12 and 13, and the generator A4 and the evaporator 6 are connected" by means of a pipe 14 in which pipe the condenser 7 is-.i1i`serted,l having inlet 15 and outlet 16 for a cooling medium, for instance water.

The refrigerating apparatusis mountedin the door 2 in such a manner that, when the door is closed, the evaporator 6 will be in. side the door'V 2, whereas the-othrpa-rts of Vthe refrigerating apparatus will be entirelyv outside the heat insulating door 2. The re' frigerating apparatus is entirely supported byv said door by means of the pipes 12 and 1'3` -which connect the evaporator 6 with the absorber'5. The door is divided'into two portions along the vertical plane 17v (see Fig. 2) and the edges of theportions facing each other are provided with semi-cylindrical notches embracingy pipes 12 and 13. A bearing plate 18 serves to attach the refrigerating apparatus to the door 2, said bearing plate 18 being provided with holes for the pipes 12, 13 and being'put on said pipes before tlediii'erent parts of the refrigerating apparatus are united. The refrigerator is- Aattached'to the bearing plate 18 by means the outer wall of a brine tank 24 enclosing 1 Ath'e evaporator 6, the remainder of said brine tank consisting of a casing 25 of sheet metal connected with the lining 21 of the door 2l by .means of a fluid tifrht joint 26. The

brine tank 24, which is lled with a liquid,

the freezing point of which is lower thanl that of water at the same pressure, for instance aqueous glycerine, a suitable salt solution or the llke', has for its object to form on the one hand acold accumulator of great ca acity, and on the 4other hand a large coo ng surface, for which purpose the casing maybe provided with cooling flanges.

In lorder to produce ice in the refrigerating cabinet they cold container 24 is providedwith a pocket 27, preferabl of quadrangular shape, said pocket 27 eing provided with shelves 28 on which rest ice molds 29. v

The parts of the refrigerating apparatus disposed outside the door 2 are covered by a protecting casing 30 provided with aper tures v31- to effect circulation of .air. Ar

-fri'gerating cabinet into ranged between the casing 25 eflthe brine tank and the op osite wall of; the cabinet is a shelf 32 dividing the interior 4of the rean upper space 33. and a lower space 34. j j'.

The refrigerating apparatus is mounted in the following manner: The assembled apparatus provided with the bearing plate 18 '1s disposed on the door 2 between its halves;

which are then connectedl with each other in some way or other,x and thenl the bearing p1ate 18 is screwed onto the door 2 for fixing theV apparatus in firm position. Then the brine tank 24 is 'fixed1 inside, the doorv 2 in the manner described above, whereupon the door 2 is inserted into the corresponding "opening in the side wall of the cabinet.

In .the embodiment shown in Figs. 4 and 5, one ofthevertical walls of the cabinet is provided with a vertical groove 3 5 adapted to be closed by a narrow slide shutter 36 (see Fig. 5) which correponds to the swingable door 2 inthe emb iment shown in Figs.

1, 2 and 3. In this case, the apparatus is' preferably connected vwiththe removable wall part, viz the shutter 36 by means ofa bearing plate 18. The whole aggregateis adapted to be pushed down in the groove 35, the evaporator 6 passing through an opening 37 1n the top wall of the cabinet, which opening 37 is then closed by a loose cover of heat insulating material. The

brine tank 24 jmay constitute a part of the aggregate as 'in the embodiment shown 1n Figs. 1, 2 or 3, but it may also be adapted" to be fastened to the bearing plate 18 from within, after the aggregate has been mounted in the cabinet, or it may be permanently installed within the cabinet.

In the embodiment shown .in Fig. 6, the refrigerating apparatus is disposed on the plane upper surface of the cabinet. In`

order to obtain an effective thermic connection between the evaporator 6 and the cool- 'ing spaces in spite of the special relation between .the level of lthe evaporator 6 and that of the absorber 5 necessary in refriger ating apparatus of the present type, the casing 25 of the brine tank 24 is provided with an extension 40` extending downwards through an opening 41 in the upper wall of the cabinet, approximately halfway the entire height thereof. The casing 25 'rests on the 'upper surface of the cabinet by means of a welded-on flange 42 supporting the refrigerating!` apparatus. The heat insulating wall of the cabinet is continued above the opening 41 by means of a cap 43 of heat evaporator 6 and the upper portion of the 2 in the embodiment shown in Figs. 1, 2 and 3. The mantle of the capy 43 is pro- 'insulating materlal, said cap 43 enclosing the 12rv vbrine tank 24an'd corresponding to the door o vided with holes or notches for the connecting pipes 12,` 13 between the evaporatory 6 and the absorber 5, and is preferably formed in two semi-cylindrical halves, the edges of said halves, which face each other, lying in a vertical plane ,extending through said holes. i

What We claim as new and desire to secure by Letters Patent ofthe United States of America is l. ln a refrigerator comprising a cabinet having walls of heat insulating material, a removable wall part and refrigerating ap-4 paratus carried by said wall part, said'refrigeratiug apparatus comprising a generator, an absorber, an evaporator, a condenser and pipes connecting said evaporator with the other parts of the refrigerating apparatus, said pipes passing through holes in said wall part and supporting the refrigerating apparatus, said wall part being .divided along a section plane extendino` through said holes, the evaporator being disposed inside said Wall part and within thecabinet, Whereas the other parts of the refrigerating apparatus are disposed outside thereof.

2. A refrigerator comprising a cabinet having an inner cooling space surrounded by walls comprising'insulating material and including a vertical side Wall, a vertically extending removable insulated portion forming part of said side wall, a generator, an absorber and condensing means situated on thetside of and adjacent to said removable portion and supported entirely on said removable portion, said absorber and enerator being disposed substantially horlzontally side by side, an evaporator on the inner side of said removable portion in said` cooling space and supported entirely on said removable portion,`a plurality'of pipes connecting said evaporator and absorber passing through said removable portion and a pipe connecting said condensing means with said evaporator passing through said removable portion.

refrigerator comprising acabinet having an inner cooling space surrounded bywalls comprising insulatmg material and including a verticalside wall, a vertically extending removable insulated portion forming part of said side wall, a generator. an absorber and condensing means situated on the outside of and adjacentto said removable portion and supported entirely on said removable portion, an eva orator on the inner side of said removab e portion in said cooling space and supported entirely on said removable portion, a plurality of conduits connecting said evaporator and absorber, said conduits passing through said removable portion and a conduit connectlng said condensing means with said' evaporator, the last mentioned conduit passing t rough said removable ortion.

LA refgigerator comprising a cabinet having an inner cooling space surrounded lng means situated on the outside ot' and adjacent to said removable portion and supported entirely on said removable portion, an evaporator on the inner side of said removable portion in said cooling space and supported entirely on said removable portion, a plurality of conduits connecting said evaporator and absorber passing through said removable portion and aconduit-connecting said condensingmeans with vsaid evaporator passing through said removable portion.

5. A yrefrigerator comprising a cabinet having an inner cooling space surrolmded by walls comprising insulating material and including a vertical side wall, a vertically extending removable insulated portion forming Ypart ofesaiele'sideY wall, a generator, an absorber and condensing means situated on the outside of and adjacent to said removable portion and supported entirely on said removable portion, an evaporator on the inner side of said removable portion in said cooling space and supported entirely on said removable portion, a plurality of pipes connecting said evaporator and absorber at the `top and bottom of each thereof, said pipes passing through said removable portion and a pipe connecting said condensing means with said evaporator, the last mentioned pi pe passing 'through said removable portion.

6. A refrigerator comprising 'a cabinetl having an inner cooling space surrounded by walls comprising insulating material and iiicluding a vertical side wall having a stationary portion and a vertically extending removable insulated portion forming part of said side wall, hinges connecting said removable portion to said stationary portion, said removable portion being adapted to be swung about said hinges, a generator, an

absorber and condensing means situated on the outside of and adjacent to said removable portion and supported entirely on said removable portion, an evaporator on the inner side of said removable portion in said cooling space and supported entirely on'said removable portion, a plurality of pipes counecting said evaporator and absorber and passing through said removable portion and a pipe connecting said condensing means with said evaporator passingthrough said removable portion.

7. A refrigerator comprising a cabinet having an inner cooling space surrounded by Walls comprising insulating material and including a vertical side Wall. a vertically Aextending removable insulated portion form-- ing part of said side wall, sald removable portion including a bearing plate, a generator, an absorber and condensing means situated on the outside of and adjacent to said lill) lll) lli

removable portion, 'an evaporator on the inf -fner 'side of said. removable portion' in said cooling space, aplurality of pipes connecting said evaporator and absorber passing D through said removable portion, means to fix said bearing plate-to said pipes, a pipe connecting said condensing means with said evaporator passingthrough said removable portion, a brine tank surrounding said evaporator, saidi bearing plate forming a portion l0 of the wall of said brine tank.

In testimony whereof We aix our signa tures.

BALTZAR CARL voN PLATEN. CARL GEORG MUNTERS. 

